Soduku code

try12.cpp: In function âvoid interact(Board&)â:
try12.cpp:211: error: ânewBoardâ was not declared in this scope
try12.cpp: In function âvoid displayBoard(Board)â:
try12.cpp:267: error: âHANDLEâ was not declared in this scope
try12.cpp:267: error: expected â;â before âhConsoleâ
Try12.cpp:268: error: âhConsoleâ was not declared in this scope
Try12.cpp:268: error: âSTD_OUTPUT_HANDLEâ was not declared in this scope
Try12.cpp:268: error: âGetStdHandleâ was not declared in this scope
try12.cpp:292: error: âFOREGROUND_REDâ was not declared in this scope
Try12.cpp:292: error: âFOREGROUND_INTENSITYâ was not declared in this scope
Try12.cpp:292: error: âSetConsoleTextAttributeâ was not declared in this scope
Try12.cpp:294: error: âFOREGROUND_GREENâ was not declared in this scope
Try12.cpp:294: error: âFOREGROUND_BLUEâ was not declared in this scope
Try12.cpp:300: error: âFOREGROUND_REDâ was not declared in this
Try12.cpp:300: error: âFOREGROUND_GREENâ was not declared in this scope
Try12.cpp:300: error: âFOREGROUND_BLUEâ was not declared in this scope
Try12.cpp:300: error: âSetConsoleTextAttributeâ was not declared in this scope

Is there anyone who can explain this errors to me or i show my code so i can be shown my errors